Tell me if the model doesn't exist before wasting time building it

[zeke]

It's currently possible to run cog push r8.im/zeke/oops-typo-in-model-name, then wait for a very long time while Docker builds the image, before eventually seeing this error:

unknown: {"errors":[{"code":"NAME_UNKNOWN","message":"The model https://replicate.com/zeke/oops-typo-in-model-name does not exist. Head to https://replicate.com/ to create the model"}]}

It would be nice if Cog could do this check before wasting time building.

[Etelis]

I'm on this